There is no hallmark but is guaranteed to be 14k gold. May be sized up or down. Measurements of the bezel: 21.7 mm x 14.6 (7/8" x 9/16"). Ring height: 28 mm (1 1/8). Weight: 4 gms, 2.6 dwt.
Please message me with requests for additional information or photos. The item "Beautiful Vintage Art Deco Chinese Oxblood Red Coral 14K Gold Ring US Size 7.5" is in sale since Friday, August 9, 2019. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Fine\Art Nouveau/Art Deco 1895-1935\Rings".The seller is "jennaleavintage" and is located in Richmond, Virginia. This item can be shipped worldwide.